GTAC Observation Log

1. Date : 03/03/2024
2. Observation Sr. No. : 16457
3. Observer : Bharti Arora, Michael De Becker, Anandmayee Tej
4. Observer\'s Email : bhartiarora612@gmail.com, Michael.DeBecker@uliege.be, anandmayee.tej@gmail.com
5. Project Name : Investigating the gradual exit of WR125 from its periastron passage: a unique opportunity for the next 30 years
6. Project Code : 45_010
7. Operator(s) : Nilesh
8. Command File : /data1/gtac/cmd/45_010/45_010_03Mar2024_0900_cmd.py
9. LTA File : /gwbifrdata1/03mar/45_010_03mar2024_b5_gwb.lta
10. LogFlag File :  

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1409 MHz ,RF2 : 1409 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1460 MHz, ILO2 : 1460MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 
13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 32 MHz,ON, IF-CH2 : 4+14 dB, 32 MHz,ON

GSB SETTINGS :

14. GSB Host : gsbm1_shivneri
15. GSB Mode : Realtime
16. GSB LTA : 8
17. GSB CTRL : ONLINE/TGC
18. GSB Fstop : ON
19. GAIN EQ : ON
20. Stokes : Total_Intensity
21. Beam - 1 : OFF
22. Beam - 2 : OFF
23. ACQ BW : 33.333333 MHz
24. Final BW : 0 MHz; Step # 0
25. Maximum Channels : 256
26. Channel Numbers : 0:255:1
27. LO5 -1  : 149
28. LO5 -2  : 156

29. Frequency Parameters (TPA) : 1409 1409 1460 1460 51 51
30. Integration Time : 8.053 Sec
31. No of Antennas Working(Fringing) at the beginning :24

32. Name of Non-Working Antennas (with reason for each) :
C09 : feed not in focus.
E04 : Servo brakes.
W03 : LMC down
W04 : LMC down
W05 : LMC down
S04 : LMC down
S06 : LMC down
W06 : LMC down

33. Note for Backup :

34. Start and End Time of Obs.(IST): 03 Mar 2024 09:00:00 - 03 Mar 2024 14:00:00

35. ONLINE Machine : TGC

36. No of Antennas Working(Fringing) at the end :23

37. RFI Status :

38. Comments (During Observations) :
08:50 : Started settings.

------------GWB Setting---------
GPU_MODE  	: Realtime
GPU_LTA  	: 4
GPU_ACQ_BW  	: 400.0000
GPU_FINAL_BW  	: 400
GPU_EDGE_FRQ  	: 0
GPU_CHAN_MAX  	: 2048
GPU_CHAN_NUM  	: 0:2047:1
GPU_STOKES  	: Total_Intensity
GPU_SIDEBAND  	: -1 -1
GPU_RF4  	: 1460  1460
GPU_DDCLO4  	: 0.0000  0.0000
GPU_SB4  	: -1 -1
GCODE4  	: 45_010
GPU_CNTRL  	: ONLINE/TGC
GPU_FSTOP  	: ON
GPU_BEAM_1  	: OFF
GPU_BEAM_2  	: OFF
GPU_BEAM_3  	: OFF
GPU_BEAM_4  	: OFF
GPU_BM_INT  	: 8
GPU_GAINEQ  	: ON
GPU_TPA  	: From online/TGC tpa
GPU_BITS  	: 4 Bits
GPU_FILRFI  	: Voltage Detection
GPU_BEAM_S  	: OFF
GPU_PFB  	: ON
GPU_PFB_TAPS  	: 4
GPU_BEAM_BIT  	: 16
GPU_VLT_BIT  	: 8
GPU_WALSH  	: OFF
GPU_ENV  	: RELEASED
--------------------------------

------GWB RFI Filter Setting-----
FILTERED_SIGNALS	:	RFI_ALL			# RFI_ALL=All signals filtered / RFI_CH1 =Channel 1 only / RFI_CH2=Channel 2 only
EXTERNAL MEDIAN	:	0			# integer value(-128 to 127)
THRESHOLD VALUE	:	4			# integer value(0 to 127)
CONSTANT VALUE		:	0			# integer value(-128 to 127)
FILTERING OPTION	:	DIGITAL NOISE		# BYPASS / CONSTANT= \'CONSTANT VALUE\' / THRESHOLD=\'THRESHOLD CLIP\' / DIGITAL=\'DIGITAL NOISE\'
DDC_STATUS		:	OFF			# DDC = ON/OFF
------------------------------

09:07 : Started command file.
          /data1/gtac/cmd/45_010/45_010_03Mar2024_0900_cmd.py
09:12 : S04 LMC down, stopped working.

09:15 : Phase cal scan (SCAN #0) observed scintillation.
09:17 : TARGET SOURCE AT ZENITH, COMMAND FILE STOPPED.
09:29 : Command file resumed.
           
09:50 : C09 Started working.
10:02 : S06 LMC down, stopped working.
11:05 : command file execution completed, and observation over.